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He says she is a good teacher, doesn't he?
They said the teacher had left, didn't they?
ä½å½ä¸»å¥æ¯I think, I believeçç»ææ¶,éå é®å¥é¨åå½¢å¼è¦çä»å¥ãä¾å¦:
I think she is all right now, isn't she?
I don't believe he is here, is he?
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